Hp officejet pro 6970 - Pink lines on full colour print - HP
Horizontal Lines down the print page - HP Support Community - 7495926
HP Deskjet 6830 and 6840 - Streaks or Lines in the Printed Image
Black lines and streaks - HP Support Community - 7946488
Help with fixing these horizontal lines : r/printers
Solved: Black horizontal lines - HP Support Community - 7850187
Black Horizontal Lines - HP Support Community - 6969235
HP Deskjet D2500 Printer Series - Horizontal Streaks or Lines in
HP CP1515n - yellow page when printing even one-line text in
Print Quality Troubleshooting Tool for HP Color LaserJet
horizontal lines coloured when copy and scan - HP Support
HP 6970 streaking - HP Support Community - 7232809
Solved: horizontal lines of cyan ink missing when printing - HP